<?PHP
$salt ='o0hh6ggKGD3fhGtyfh';

$passwd=generateStrongPassword();
echo "PASSWD 	:	 ".$passwd."</br>";

$enc=pwdEncrypt($passwd);
echo "Encrypt 	: 	".$enc."</br>";

$decp=pwdDecrypt($enc);
echo "Decrypt 	: 	".$decp."</br>";


function pwdEncrypt($passwd)
{
    return trim(base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $salt, $passwd, MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND))));
}
 
function pwdDecrypt($passwd)
{
    return trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $salt, base64_decode($passwd), MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND)));
}

function generateStrongPassword($length = 8, $add_dashes = false, $available_sets = 'luds')
{
	$sets = array();
	if(strpos($available_sets, 'l') !== false)
		$sets[] = 'abcdefghjkmnpqrstuvwxyz';
	if(strpos($available_sets, 'u') !== false)
		$sets[] = 'ABCDEFGHJKMNPQRSTUVWXYZ';
	if(strpos($available_sets, 'd') !== false)
		$sets[] = '23456789';
	//if(strpos($available_sets, 's') !== false)
		//$sets[] = '!@#$%&*?';

	$all = '';
	$password = '';
	foreach($sets as $set)
	{
		$password .= $set[array_rand(str_split($set))];
		$all .= $set;
	}

	$all = str_split($all);
	for($i = 0; $i < $length - count($sets); $i++)
		$password .= $all[array_rand($all)];

	$password = str_shuffle($password);

	if(!$add_dashes)
		return $password;

	$dash_len = floor(sqrt($length));
	$dash_str = '';
	while(strlen($password) > $dash_len)
	{
		$dash_str .= substr($password, 0, $dash_len) . '-';
		$password = substr($password, $dash_len);
	}
	$dash_str .= $password;
	return $dash_str;
}